WO2012157056A1 - 永久磁石型回転電機 - Google Patents
永久磁石型回転電機 Download PDFInfo
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- WO2012157056A1 WO2012157056A1 PCT/JP2011/061164 JP2011061164W WO2012157056A1 WO 2012157056 A1 WO2012157056 A1 WO 2012157056A1 JP 2011061164 W JP2011061164 W JP 2011061164W WO 2012157056 A1 WO2012157056 A1 WO 2012157056A1
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- permanent magnet
- magnetic flux
- flux control
- rotor
- holes
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
- H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/09—Magnetic cores comprising laminations characterised by being fastened by caulking
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
Definitions
- the present invention relates to a rotating electric machine such as a vehicle electric motor, and more particularly to a rotor structure of a rotating electric machine in which a permanent magnet is disposed inside the rotor.
- IPM motor Interior ⁇ ⁇ Permanent Magnet Motor
- Patent Document 1 it is necessary to extend the depth of the groove formed in the q-axis magnetic path to the vicinity of the end portion on the inner peripheral side of the permanent magnet embedded in the rotor. For this reason, it was difficult to process the magnetic steel sheets to be laminated, and there was a problem that it was difficult to obtain the outer diameter accuracy of the rotor core.
- the present invention has been made in view of the above, and an object of the present invention is to provide a permanent magnet type rotating electrical machine capable of reducing torque ripple without impairing the outer diameter accuracy of the rotor core.
- a permanent magnet type rotating electrical machine includes a stator having a plurality of slots for accommodating a stator coil inside a slot, and a rotation gap in the stator.
- a rotor core disposed so as to be rotatable, and a rotor in which a plurality of permanent magnets are embedded per pole inside the rotor core, and the rotor core includes a plurality of the cores.
- a magnet insertion hole for embedding the permanent magnet is formed in a convex shape toward the center of the rotor, and when the permanent magnet is embedded in each of the magnet insertion holes, at least the side surface portion on the outer peripheral side of the permanent magnet located on both sides
- a center line between the magnetic poles is formed between the one permanent magnet group composed of the plurality of permanent magnets and the other permanent magnet group adjacent to the one permanent magnet group.
- a pair of magnetic flux controls that are symmetrical with respect to A hole is provided for each magnetic pole, the diameter of each magnetic flux control hole is d, the distance between the centers of the pair of magnetic flux control holes is m, the width of the interpolar part is b, and the pole pitch of the permanent magnet group is ⁇ .
- m / ⁇ obtained by normalizing the center distance m by the pole pitch ⁇ of the permanent magnet group satisfies 0.08 ⁇ m / ⁇ ⁇ (b ⁇ 2d) / ⁇ .
- a magnetic flux control hole is provided.
- FIG. 1 is a cross-sectional view of a permanent magnet type electric motor that is an example of a permanent magnet type rotating electrical machine according to Embodiment 1.
- FIG. FIG. 2 is a schematic cross-sectional view of a rotor showing a magnetic pole configuration of a permanent magnet embedded in the rotor.
- FIG. 3 is a partially enlarged view of the case where the permanent magnet of the portion indicated by the broken line in FIG. 2 is not inserted.
- FIG. 4 is a partially enlarged view corresponding to FIG. 3 when a permanent magnet is inserted.
- FIG. 5 is a diagram illustrating the detailed position of the magnetic flux control hole according to the first embodiment.
- FIG. 6 is a diagram showing a time change of torque ripple according to the presence or absence of the magnetic flux control hole according to the first embodiment.
- FIG. 7 is a diagram showing the relationship between the center distance of the magnetic flux control holes and the amplitude of the torque ripple according to the first embodiment.
- FIG. 8 is an axial sectional view of a magnetic flux control hole according to the second embodiment formed by a caulking structure.
- FIG. 9 is a diagram showing the relationship between the distance between the centers of the magnetic flux control holes and the torque ripple amplitude according to the second embodiment formed by the caulking structure.
- FIG. 10 is a schematic cross-sectional view showing a partial structure of the rotor core of the permanent magnet type rotating electric machine according to the third embodiment.
- FIG. 11 is a diagram (simulation result) showing the relationship between the distance between the centers of the magnetic flux control holes and the torque ripple amplitude by the rotor structure according to the third embodiment.
- FIG. 12 is a schematic cross-sectional view showing a partial structure of the rotor core of the permanent magnet type rotating electric machine according to the fourth embodiment.
- FIG. 1 is a cross-sectional view of a permanent magnet type electric motor that is an example of a permanent magnet type rotating electrical machine according to Embodiment 1
- FIG. 2 is a schematic cross section of a rotor showing a magnetic pole configuration of a permanent magnet embedded in the rotor.
- 3 is a partially enlarged view when the permanent magnet of the portion indicated by the broken line in FIG. 2 is not inserted, and
- FIG. 4 corresponds to FIG. 3 when the permanent magnet is inserted.
- FIG. 1 is a cross-sectional view of a permanent magnet type electric motor that is an example of a permanent magnet type rotating electrical machine according to Embodiment 1
- FIG. 2 is a schematic cross section of a rotor showing a magnetic pole configuration of a permanent magnet embedded in the rotor.
- 3 is a partially enlarged view when the permanent magnet of the portion indicated by the broken line in FIG. 2 is not inserted
- FIG. 4 corresponds to FIG. 3 when the permanent magnet is inserted.
- a permanent magnet type electric motor 1 according to Embodiment 1 includes a stator 2 and a rotor 5.
- the stator 2 has a stator core 3 having a cylindrical shape, and the stator core 3 is formed with, for example, 36 teeth 3b at an equiangular pitch and intermittently on the inner peripheral side thereof. Thus, 36 slots 3a are formed.
- the stator coil 4 is wound and stored so as to include a predetermined number of teeth 3b therein.
- the rotor 5 is produced by, for example, laminating and integrating a predetermined number of magnetic steel plates, the outer peripheral surface forms a cylindrical surface, and the 18 magnet insertion holes 7 are arranged so as to be arranged at an equiangular pitch.
- the arrangement of the magnet insertion holes 7 includes two magnet insertion holes 7a and 7c at both ends of one magnet insertion hole 7b, and the outer peripheral surface (outer peripheral direction) of the rotor core 6.
- Six sets are arranged (formed) in a generally U shape so as to open toward the front.
- the direction of the magnetic flux by the permanent magnets 8a to 8c which is a set of first permanent magnets, is magnetized (magnetized) in a direction that converges toward the outer peripheral surface of the rotor core 6, while the adjacent set (the first set)
- the permanent magnets 16 a to 16 c of the second permanent magnet set are magnetized in such a direction that the direction of the magnetic flux extends toward the center of the rotor core 6.
- the permanent magnet group magnetized in the direction in which the direction of the magnetic flux by the permanent magnet converges toward the outer peripheral surface of the rotor, and the central portion of the rotor Permanent magnet groups that are magnetized in a direction that spreads out are arranged alternately.
- the reason why the direction of magnetization by the permanent magnet group is configured as described above is to make the induced voltage of the stator coil sinusoidal, and in applications that do not require the induced voltage of the stator coil to be sinusoidal, Not as long. That is, the magnetization directions of the permanent magnet groups magnetized in the direction toward the outer peripheral surface of the rotor or in the direction toward the center of the rotor may be parallel.
- cavities 9 are formed on both side surface portions, and cavity portions 9c1 and 9c2 are formed on both side surface portions of the permanent magnet 8c.
- the permanent magnet 8c of one permanent magnet group is formed in the inter-pole portion 22 between 8a to 8c forming one permanent magnet group and 16a to 16c forming adjacent permanent magnet groups.
- the magnetic flux control hole 20a is provided in the vicinity of the formed hollow portion 9c2
- the magnetic flux control hole 20b is provided in the vicinity of the hollow portion 17a1 formed in the permanent magnet 16a of the adjacent permanent magnet group.
- These magnetic flux control holes 20 a and 20 b are holes that enable reduction of torque ripple, and the depth of the holes is preferably formed to the same extent as the thickness of the permanent magnet 8 embedded in the rotor core 6.
- FIG. 1 36 slots 3 a are arranged at an equiangular pitch in the circumferential direction of the stator 2, and 18 permanent magnets 8, 16 constituting 6 permanent magnet groups are arranged in the circumferential direction of the rotor core 6.
- an electric motor (6 slots per pole, 3 slots per pole) in which 6 pairs (12 pieces) of magnetic flux control holes 20 are provided at 6 poles between 6 permanent magnet groups.
- two magnetic flux control holes 20) per permanent magnet and one magnetic pole are shown as an example, the number of poles and slots of the motor, the number of permanent magnets, the number of magnetic flux control holes, etc. are limited to the configuration shown in FIG. Any number of choices are possible.
- the shape of the magnetic flux control hole 20 is, for example, a circle, as shown in the figure, the center-to-center distance m of the magnetic flux control holes 20a and 20b, the diameter d of each magnetic flux control hole, and the pole pitch ⁇ of the permanent magnet group Consider the torque ripple when is a parameter.
- FIG. 6 is a diagram (simulation result) showing a change in torque ripple over time according to the presence or absence of the magnetic flux control hole 20.
- the horizontal axis plots the rotational position of the motor, and the vertical axis plots the torque.
- a solid line is a case where the magnetic flux control hole 20 is provided, and a broken line is a case where the magnetic flux control hole 20 is not provided. As shown in the figure, it can be seen that the torque ripple is greatly reduced by providing the magnetic flux control hole 20.
- FIG. 7 is a diagram (simulation result) showing the relationship between the distance between the centers of the magnetic flux control holes 20 and the amplitude of the torque ripple.
- a value obtained by normalizing the distance between the centers of the magnetic flux control holes 20 a and 20 b by the magnetic pole pitch ⁇ is plotted on the horizontal axis, and the amplitude value of the torque ripple when the magnetic flux control hole 20 is provided on the vertical axis.
- the solid line indicates the case where the diameters of the magnetic flux control holes 20a and 20b are 0.026 ⁇
- the dashed line indicates the case where the diameters of the magnetic flux control holes 20a and 20b are 0.036 ⁇
- the broken line indicates the magnetic flux control holes. This is a case where each diameter of 20a and 20b is 0.046 ⁇ .
- the magnetic flux control holes 20a and 20b do not overlap each other, and a part of the magnetic flux control holes 20a and 20b does not overlap the magnet insertion hole 7c or the magnet insertion hole 15a. This is a condition (see FIG. 5).
- the value (m / ⁇ ) obtained by normalizing the center distance m of the magnetic flux control holes 20a and 20b with the pole pitch ⁇ is 0.08 or more. Then, torque ripple can be reduced as compared with the case where the magnetic flux control hole 20 is not provided. Further, if the value of m / ⁇ is 0.1 or more, a torque ripple reduction rate of 20% or more can be obtained in the three cases of FIG. 7, which is a more preferable setting value.
- the value of m / ⁇ is less than 0.2, but under this condition, a part of the magnetic flux control holes 20a and 20b does not overlap with the magnet insertion hole 7c or the magnet insertion hole 15a.
- m ⁇ (b-2d) m / The condition of ⁇ ⁇ (b ⁇ 2d) / ⁇ ) is observed.
- a pair of magnetic flux control holes are provided in the interpole portion of the rotor, and the pair of magnetic flux control holes do not overlap with each other.
- Each of the pair of magnetic flux control holes does not overlap with a part of the adjacent magnet insertion hole, and the value (m / ⁇ ) obtained by normalizing the center distance m between the pair of magnetic flux control holes with the pole pitch ⁇ is 0. Since it is set to be 0.08 or more, torque ripple can be reduced. Further, since this method is a simple method of providing a hole in a part of the rotor core, there is an advantage that it is easy to obtain the outer diameter accuracy of the rotor core.
- the hole portion does not need to be a gap (air), and a material (such as resin) having a lower permeability than the rotor core is embedded. It doesn't matter.
- FIG. 8 is an axial sectional view of a magnetic flux control hole formed by a caulking structure.
- FIG. 9 is a diagram (simulation result) showing the relationship between the distance between the centers of the magnetic flux control holes 20 formed by the caulking structure and the torque ripple amplitude.
- the relationship between the horizontal axis and the vertical axis and the diameter of the magnetic flux control hole 20 as a parameter are the same as those in the first embodiment.
- the magnetic flux control hole 20 When the magnetic flux control hole 20 is caulked, the magnetic permeability of the magnetic flux control hole 20 is smaller than the magnetic permeability of the rotor core 6. For this reason, it becomes equivalent to the structure of Embodiment 1, and it becomes possible to reduce torque ripple. Further, the caulking structure can fix the rotor in the axial direction, and the workability becomes easy. That is, by forming the magnetic flux control hole 20 into a caulking structure, the magnetic steel plate constituting the rotor core 6 is fixed and integrated, and the magnetic flux inside the rotor 2 is controlled to reduce torque ripple. Both effects can be obtained.
- a pair of caulking holes are provided in the interpole portions of the rotor, and each of the pair of caulking holes is adjacent. Since the center distance m between the pair of caulking holes does not overlap with the magnet insertion hole and the value (m / ⁇ ) normalized by the pole pitch ⁇ is set to 0.08 or more, The caulking hole acts as the magnetic flux control hole described in the embodiment, and torque ripple can be reduced. Further, since this method is a simple method in which a caulking structure hole is provided in a part of the rotor core, an effect that the outer diameter accuracy of the rotor core is not impaired can be obtained.
- FIG. 10 is a schematic cross-sectional view showing a partial structure of the rotor core of the permanent magnet type rotating electric machine according to the third embodiment.
- three permanent magnets are arranged in a substantially U shape per pole.
- two permanent magnets are arranged in a V shape as shown in FIG.
- the magnetic flux control holes 20a and 20b similar to those of the first embodiment are provided in the inter-electrode portions.
- FIG. 11 is a diagram (simulation result) showing the relationship between the center-to-center distance of the magnetic flux control holes 20 and the torque ripple amplitude by the rotor structure according to the third embodiment.
- the relationship between the horizontal axis and the vertical axis and the diameter of the magnetic flux control hole 20 as a parameter are the same as those in the first embodiment.
- the value (m / ⁇ ) obtained by normalizing the center distance m of the magnetic flux control holes 20a and 20b with the pole pitch ⁇ is 0.075 or more.
- the condition of m / ⁇ ⁇ (b ⁇ 2d) / ⁇ is satisfied as a condition for preventing a part of the magnetic flux control holes 20a and 20b from overlapping the adjacent magnet insertion holes.
- the number of permanent magnets is one less per pole than in the first embodiment, so that the magnet insertion process is reduced and the workability is facilitated. An effect is obtained.
- FIG. FIG. 12 is a schematic cross-sectional view showing a partial structure of the rotor core of the permanent magnet type rotating electric machine according to the fourth embodiment.
- Embodiment 1 the rotor cross-section detailed drawing in Embodiment 4 of this invention is shown.
- FIGS. 3 and 4 when permanent magnets are inserted into the three magnet insertion holes 7 a to 7 c, gaps are formed on both sides. Then, as indicated by broken line portions 24a and 24c in FIG. 12, a cavity is not formed inside each of the magnet insertion holes 7a and 7c located on both sides.
- the cavity of the side surface portion of the central permanent magnet can be enlarged, so that it is easy to insert an adhesive for fixing the permanent magnet, and the motor is assembled. The effect is easy.
- two or three permanent magnets per pole are V-shaped or U-shaped toward the outer peripheral surface (that is, concave toward the outer peripheral surface or toward the rotor center).
- the number of permanent magnets per pole may be four or more. That is, the permanent magnet type rotating electrical machine according to the present invention may have a configuration in which a plurality of permanent magnets per pole are arranged in a concave shape toward the outer peripheral surface or a convex shape toward the rotor center.
- the permanent magnet 8 embedded in the magnet insertion hole 7 is exemplified by a substantially rectangular shape as shown in FIG. 4, for example, but is not limited to such a rectangular shape.
- a trapezoidal shape may be used.
- the shape of the magnetic flux control hole 20 has been described as a circular shape as an example, but is not limited to a circular shape, and may be another shape.
- the circular shape has the advantage of easy processing, and is effective for shortening the manufacturing process.
- the present invention is useful as a permanent magnet type rotating electrical machine capable of reducing torque ripple while maintaining the outer diameter accuracy of the rotor core.
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- Engineering & Computer Science (AREA)
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Abstract
Description
図1は、実施の形態1に係る永久磁石型回転電機の一例である永久磁石型電動機の断面図であり、図2は、回転子に埋め込まれる永久磁石の磁極構成を示す回転子の模式断面図であり、図3は、図2の破線部で示した部分の永久磁石が挿入されていない場合の部分拡大図であり、図4は、永久磁石が挿入されている場合の図3に対応する部分拡大図である。
実施の形態1では、回転子の極間部にトルクリプルの低減を可能とする一対の磁束制御穴20a,20bを設けるようにしているが、これら磁束制御穴20a,20bの部分を図8に示すようなかしめ構造としてもよい。図8は、かしめ構造によって形成される磁束制御穴の軸方向断面図である。
図10は、実施の形態3に係る永久磁石型回転電機の回転子鉄心の一部の構造を示す模式断面図である。実施の形態1,2では、1極あたり3個の永久磁石を概略U字状に配置したが、この実施の形態では、図10に示すように、1極あたり2個の永久磁石をV字形状に配置し、実施の形態1と同様な磁束制御穴20a,20bを極間部に設けている。
図12は、実施の形態4に係る永久磁石型回転電機の回転子鉄心の一部の構造を示す模式断面図である。実施の形態1では、本発明の実施の形態4における回転子断面詳細図を示す。実施の形態1では、図3,4に示すように、3つの磁石挿入穴7a~7cに永久磁石を挿入したときに全ての両側に空隙部が形成される構造としているが、実施の形態4では、図12の破線部24a,24cで示すように、両側に位置する磁石挿入穴7a,7cの各内側には空洞部が形成されない構造としている。破線部24a,24cで示す部分は、磁束制御穴20a,20bから離れているため、図6および図7に示すシミュレーション結果に及ぼす影響は小さい。このため、実施の形態4に係る回転子鉄心の構造であっても、実施の形態1と同様の効果が得られる。
2 固定子
3 固定子鉄心
3a スロット
3b ティース
4 固定子コイル
5 回転子
6 回転子鉄心
7(7a~7c),15a 磁石挿入穴
8(8a~8c),16(16a~16c) 永久磁石
9(9a1,9a2,9b1,9b2,9c1,9c2),17a1 空洞部
18 回転空隙
20a,20b 磁束制御穴
22 極間部
24a,24c 破線部
30 磁極間中心線
Claims (5)
- スロットの内部に固定子コイルを収納する複数のスロットを有する固定子と、
前記固定子に回転空隙を介して回転可能に配置される回転子鉄心を有し、この回転子鉄心の内部に1極あたり複数個の永久磁石が埋め込まれる回転子と、
を備え、
前記回転子鉄心には前記複数個の永久磁石を埋め込む磁石挿入穴が回転子中心に向かって凸型に形成され、前記各磁石挿入穴に永久磁石を埋め込んだときに、両側に位置する永久磁石の少なくとも外周部側の側面部には空洞部が形成され、
前記複数個の永久磁石からなる一の永久磁石群と、当該一の永久磁石群に隣接する他の永久磁石群との間の極間部には、磁極間の中心線を基準として対称形を成す一対の磁束制御穴が各磁極毎に設けられ、
前記各磁束制御穴の直径をd、当該一対の磁束制御穴の中心間距離をm、前記極間部の幅をb、前記永久磁石群の極ピッチをτとするとき、前記中心間距離mを前記永久磁石群の極ピッチτで規格化したm/τの値が、0.08<m/τ<(b-2d)/τを満足するように当該磁束制御穴が設けられていることを特徴とする永久磁石型回転電機。 - 前記回転子鉄心は、積層した電磁鋼板をかしめによって一体化する構造であり、
前記一対の磁束制御穴が、かしめ構造の穴であることを特徴とする請求項1に記載の永久磁石型回転電機。 - 前記中心間距離mを前記極ピッチτで規格化したm/τの値が、0.1<m/τ<(b-2d)/τを満足するように前記磁束制御穴または前記かしめ構造の穴が設けられていることを特徴とする請求項1または2に記載の永久磁石型回転電機。
- 前記回転子鉄心には1極あたり3個以上の永久磁石を埋め込む磁石挿入穴が形成され、当該磁石挿入穴は、前記回転子鉄心の外周方向に向かって開くように概略U字状に形成されていることを特徴とする請求項1または2に記載の永久磁石型回転電機。
- 前記磁石挿入穴は、前記回転子鉄心の外周方向に向かって開くようにV字状に形成されていることを特徴とする請求項1または2に記載の永久磁石型回転電機。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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JP2013514879A JP5372296B2 (ja) | 2011-05-16 | 2011-05-16 | 永久磁石型回転電機 |
US14/118,123 US20140091663A1 (en) | 2011-05-16 | 2011-05-16 | Permanent-magnet type rotating electrical machine |
CN201180070835.9A CN103518313B (zh) | 2011-05-16 | 2011-05-16 | 永磁体型旋转电机 |
EP11865546.3A EP2712058B1 (en) | 2011-05-16 | 2011-05-16 | Permanent-magnet type rotating electrical machine |
PCT/JP2011/061164 WO2012157056A1 (ja) | 2011-05-16 | 2011-05-16 | 永久磁石型回転電機 |
Applications Claiming Priority (1)
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PCT/JP2011/061164 WO2012157056A1 (ja) | 2011-05-16 | 2011-05-16 | 永久磁石型回転電機 |
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WO2012157056A1 true WO2012157056A1 (ja) | 2012-11-22 |
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PCT/JP2011/061164 WO2012157056A1 (ja) | 2011-05-16 | 2011-05-16 | 永久磁石型回転電機 |
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US (1) | US20140091663A1 (ja) |
EP (1) | EP2712058B1 (ja) |
JP (1) | JP5372296B2 (ja) |
CN (1) | CN103518313B (ja) |
WO (1) | WO2012157056A1 (ja) |
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CN103414301A (zh) * | 2013-08-15 | 2013-11-27 | 南京信息工程大学 | 一种拼装式磁极的轴向磁场无铁心永磁电机 |
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JP2018061356A (ja) * | 2016-10-05 | 2018-04-12 | マツダ株式会社 | 回転電機 |
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JP6355859B1 (ja) * | 2017-01-25 | 2018-07-11 | 三菱電機株式会社 | 回転子及び回転電機 |
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Also Published As
Publication number | Publication date |
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JPWO2012157056A1 (ja) | 2014-07-31 |
CN103518313A (zh) | 2014-01-15 |
EP2712058A1 (en) | 2014-03-26 |
JP5372296B2 (ja) | 2013-12-18 |
EP2712058A4 (en) | 2015-12-30 |
EP2712058B1 (en) | 2019-09-11 |
CN103518313B (zh) | 2016-12-21 |
US20140091663A1 (en) | 2014-04-03 |
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